求助 OG 13 CR 101~各种不明白！求解答~

joyzhang1990

101. Which of the following most logically completes the argument?

The irradiation of food kills bacteria and thus retards spoilage. However, it also lowers the nutritional value of
many foods. For example, irradiation destroys a significant percentage of whatever vitamin Bl a food may
contain. Proponents of irradiation point out that irradiation is no worse in this respect than cooking. However, this
fact is either beside the point, since much irradiated food is eaten raw, or else misleading, since

(A) many of the proponents of irradiation are food distributors who gain from foods' having a longer shelf life
(B) it is clear that killing bacteria that may be present on food is not the only effect that irradiation has
(C) cooking is usually the final step in preparing food for consumption, whereas irradiation serves to ensure a
longer shelf life for perishable foods
(D) certain kinds of cooking are, in fact, even more destructive of vitamin Bl than carefully controlled
irradiation is
(E) for food that is both irradiated and cooked, the reduction of vitamin Bl associated with either process
individually is compounded

答案选E，但是看了解析，自己还是琢磨不透啊。没看懂是个啥逻辑链啊~求各位帮忙分析下~谢谢

jeffjarrett

compounded这个单词很关键。考场上不到2分钟分析逻辑链不一定是一个适合所有人的方法。

A说irradiate可以让食物的一个长的保质期，B说irradiation对食物的作用，C说cooking和irradiate对食物的作用的不同，D说cooking比控制下的irradiate对食物VB1的损害更大，E说食物既irradiate又cook，VB1在这两个单独过程中的损害是有加成的。

原文的结论是：“irradiation在process food上对VBI的damage程度不会超过cooking在process food上对VB1的damage程度”这一说法并不靠谱。

用无关词排除法，留下D和E，D方向错了，因此选E。

硬要分析逻辑链也是ok的。

结论：“irradiation在process food上对VBI的damage程度不会超过cooking在process food上对VB1的damage程度”这一说法并不靠谱。

前提：irradiation会损害食物中的VB1；much irradiated food is eaten raw。

选E是因为，尽管much irradiated food is eaten raw，但是仍然存在个别irradiated food需要cooking。如果这两个过程都会损害VB1，那么irradiated+cooking对食物VB1的损害肯定大于只cooking对食物VB1的损害。

joyzhang1990

请大家帮看看分析下吧。马上要考的人伤不起了~呜呜

leoxan

好吧，同问~~纠结了好久的题目~

joyzhang1990

好吧，同问~~纠结了好久的题目~

-- by 会员 leoxan (2012/12/3 21:50:15)

我是中文，英文都慢慢翻译，体会了，还是觉得无厘头啊。你有这种感觉吗？

来人啊，求救啊。逻辑妹妹求救啊

joyzhang1990

谢谢！

雨夜眠

jeffjarrett 发表于 2012-12-4 10:36
compounded这个单词很关键。考场上不到2分钟分析逻辑链不一定是一个适合所有人的方法。A说irradiate可以让 ...

赞同Jeff所说。

务必要理解compounded这个词的意思。主要有两层意思：第一是混合物；第二是加重。
为什么这里不是通常所说的混合？混合是用在两种或者以上的物质组合在一起，而这里所说的是Reduction of B1的效果。
只有明白了这个意思，才能真正理解OG的解释：
But if the effects of radiation and cooking combine todestroy more B1 than cooking or irradiation alone would, then the proponents’claim suggests something that is false.

另外，如果考场上不理解compound这个意思，就不建议按照逻辑链的方法去做了，考场上选对才是硬道理。

鸢儿gmat

People have compared irradiation to cooking and found that they're about the same (in terms of leaching nutrients). Why is this comparison misleading?


so, you're looking for a reason why it's MISLEADING to COMPARE IRRADIATION TO COOKING.

when you COMPARE two things, the assumption is that they are ALTERNATIVES.

therefore, if a comparison is "misleading", we need a choice that shows that they aren't simply alternatives.

this is what choice (e) does: it shows that some food is irradiated AND cooked. they're not alternatives, so you can't settle the issue with a comparison.

鸢儿gmat

类比：

Dieting burns MORE body fat than does exercise, all other things equal.

if i say "you should just diet, since exercise is no better than dieting", then that's MISLEADING.

why is it misleading?
because ... you can do both, compounding the effects.

温润的风

鸢儿gmat 发表于 2013-9-24 07:31
类比：

Dieting burns MORE body fat than does exercise, all other things equal.

好赞 解释的很清楚例子也很好